NPPES file of Aug 9, 2026

Doctors and health care providers in Boston, MA

41,865 individual NPPES records list a practice address in Boston, 1st of 406 Massachusetts cities. The largest group is students in training: 6,126, 15% of the city's records, against 5% across Massachusetts. Page 94 of 838.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Boston

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Boston in Massachusetts

  • Rank in Massachusetts1st of 406 cities by records
  • Share of the state19.1% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups24.7% of all records
  • Students in training rank1st of the 10 Massachusetts cities with the most

Compared with Massachusetts as a whole, Boston has 2.9× the state's share of student in an organized health care education/training program records and 0.23× its share of mental health counselor records.

Providers in Boston, alphabetically

  1. Anne Breda, PT, DPTPhysical Therapist1538867833
  2. Miriam Bredella, MDDiagnostic Radiology Physician1861482028
  3. Margaret Bredin, LICSWAddiction (Substance Use Disorder) Counselor1326350091
  4. Colleen Breed, CNPNurse Practitioner1912614736
  5. Natalie BreedenSurgical Physician Assistant1063140895
  6. Emily BreenOptometrist1891633012
  7. Erin BreenPeriodontics1982074803
  8. Lily Breen, MSW, LCSWClinical Social Worker1033968334
  9. Louise BreenStudent in an Organized Health Care Education/Training Program1548962129
  10. Matthew Breen, OTR/LOccupational Therapist1215357371
  11. Micheal Breen, MB BCH BAOPediatric Radiology Physician1487095295
  12. Rachel BreenPhysician Assistant1881332039
  13. Amy Bregar, MDGynecologic Oncology Physician1851687446
  14. Caroline Bregman, LICSWClinical Social Worker1194203919
  15. Edward Breiby, P.A.Physician Assistant1154421899
  16. Daniel Brein, DMDPediatric Dentistry1376994038
  17. Roger Breitbart, MDPediatric Cardiology Physician1174597983
  18. Scott Breitenstein, CRNACertified Registered Nurse Anesthetist1265490130
  19. Hans Breiter, MDPsychiatry Physician1548236359
  20. Lauren Breithaupt Langston, MAStudent in an Organized Health Care Education/Training Program1881184950
  21. Stefan Breitling, MDPediatric Adolescent Medicine Physician1831696012
  22. Candice Brem, M.D.Dermatopathology (Pathology) Physician1144631367
  23. Richard BremerAnesthesiology Physician1992332811
  24. Rebecca Brendel, MDPsychiatry Physician1861475493
  25. Amanda Breneman, N.P.Family Nurse Practitioner1801145149
  26. Emily BrenmanPhysician Assistant1114859725
  27. Anne Brennan, CRNACertified Registered Nurse Anesthetist1104236884
  28. Caitlin Brennan, RN, MSN, PHDAcute Care Nurse Practitioner1174890966
  29. Dana Brennan, RD, LDNRegistered Dietitian1497970099
  30. David Brennan, MSW, LICSWClinical Social Worker1750473369
  31. Douglas Brennan, MDPsychiatry Physician1932580636
  32. Emily Brennan, MSN, CPNPPediatric Nurse Practitioner1346905445
  33. Gregory Brennan, PA-CPhysician Assistant1629300124
  34. Ian BrennanVascular & Interventional Radiology Physician1750660239
  35. Lisa Brennan, RNRegistered Nurse1215498019
  36. Mary Brennan, CPNPPediatric Nurse Practitioner1336984368
  37. Patricia Brennan, RNNephrology Registered Nurse1083769970
  38. Patrick Brennan, M.D., PH.D.Internal Medicine Physician1053458406
  39. Rachael BrennanCertified Registered Nurse Anesthetist1407444052
  40. Theresa Brennan, RDH BSDental Hygienist1063902906
  41. Thea Brennan-Krohn, M.D.Pediatric Infectious Diseases Physician1922397827
  42. Gary Brenner, MD PHDPain Medicine (Anesthesiology) Physician1447240627
  43. Laura Brenner, M.D.Pulmonary Disease Physician1841510211
  44. Lauren Brenner, PHDPsychologist1801316021
  45. Lindsey BrennerStudent in an Organized Health Care Education/Training Program1437452786
  46. Louis Brenner, M.D.Nephrology Physician1306995956
  47. Michael Brenner, MDRheumatology Physician1699732909
  48. Todd Brenner, MDStudent in an Organized Health Care Education/Training Program1821617317
  49. Eduardo Brenner Muslera, MDStudent in an Organized Health Care Education/Training Program1336087337
  50. Linda Brenner Semela, MDOphthalmology Physician1922263771

The largest Massachusetts cities

  1. Worcester13,166
  2. Springfield8,553
  3. Cambridge5,145
  4. Brockton4,287
  5. Milford3,459

All of Massachusetts →

How to read this directory

Boston, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 41,865 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Boston - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Boston practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Boston is weighted toward Student in an Organized Health Care Education/Training Program (6,126 clinicians, followed by Internal Medicine Physician with 2,320 and Clinical Social Worker with 1,906). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Massachusetts's population, Boston reports roughly 598 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of Massachusetts's most common specialties, Counselor is the most prominent one with no provider currently listing a Boston practice address, a coverage gap Boston patients typically fill by traveling to a larger nearby hub.

For Boston patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Boston, MA?

There are 41,865 registered healthcare providers in Boston, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Boston?

The most common specialties in Boston are Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Clinical Social Worker, Physician Assistant, Anesthesiology Physician. Student in an Organized Health Care Education/Training Program has the most providers with 6,126.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.